src/de/todesbaum/jsite/application/ProjectInserter.java

   1 /*
   2  * jSite - ProjectInserter.java - Copyright © 2006–2011 David Roden
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18
  19 package de.todesbaum.jsite.application;
  20
  21 import java.io.File;
  22 import java.io.FileInputStream;
  23 import java.io.IOException;
  24 import java.io.InputStream;
  25 import java.util.ArrayList;
  26 import java.util.Arrays;
  27 import java.util.HashSet;
  28 import java.util.Iterator;
  29 import java.util.List;
  30 import java.util.Map;
  31 import java.util.Set;
  32 import java.util.Map.Entry;
  33 import java.util.logging.Level;
  34 import java.util.logging.Logger;
  35
  36 import de.todesbaum.jsite.gui.FileScanner;
  37 import de.todesbaum.jsite.gui.FileScanner.ScannedFile;
  38 import de.todesbaum.jsite.gui.FileScannerListener;
  39 import de.todesbaum.util.freenet.fcp2.Client;
  40 import de.todesbaum.util.freenet.fcp2.ClientPutComplexDir;
  41 import de.todesbaum.util.freenet.fcp2.ClientPutDir.ManifestPutter;
  42 import de.todesbaum.util.freenet.fcp2.Connection;
  43 import de.todesbaum.util.freenet.fcp2.DirectFileEntry;
  44 import de.todesbaum.util.freenet.fcp2.FileEntry;
  45 import de.todesbaum.util.freenet.fcp2.Message;
  46 import de.todesbaum.util.freenet.fcp2.RedirectFileEntry;
  47 import de.todesbaum.util.freenet.fcp2.Verbosity;
  48 import de.todesbaum.util.io.StreamCopier.ProgressListener;
  49
  50 /**
  51  * Manages project inserts.
  52  *
  53  * @author David ‘Bombe’ Roden &lt;bombe@freenetproject.org&gt;
  54  */
  55 public class ProjectInserter implements FileScannerListener, Runnable {
  56
  57         /** The logger. */
  58         private static final Logger logger = Logger.getLogger(ProjectInserter.class.getName());
  59
  60         /** Random number for FCP instances. */
  61         private static final int random = (int) (Math.random() * Integer.MAX_VALUE);
  62
  63         /** Counter for FCP connection identifier. */
  64         private static int counter = 0;
  65
  66         /** The list of insert listeners. */
  67         private List<InsertListener> insertListeners = new ArrayList<InsertListener>();
  68
  69         /** The freenet interface. */
  70         protected Freenet7Interface freenetInterface;
  71
  72         /** The project to insert. */
  73         protected Project project;
  74
  75         /** The file scanner. */
  76         private FileScanner fileScanner;
  77
  78         /** Object used for synchronization. */
  79         protected final Object lockObject = new Object();
  80
  81         /** The temp directory. */
  82         private String tempDirectory;
  83
  84         /** The current connection. */
  85         private Connection connection;
  86
  87         /** Whether the insert is cancelled. */
  88         private volatile boolean cancelled = false;
  89
  90         /** Progress listener for payload transfers. */
  91         private ProgressListener progressListener;
  92
  93         /**
  94          * Adds a listener to the list of registered listeners.
  95          *
  96          * @param insertListener
  97          *            The listener to add
  98          */
  99         public void addInsertListener(InsertListener insertListener) {
 100                 insertListeners.add(insertListener);
 101         }
 102
 103         /**
 104          * Removes a listener from the list of registered listeners.
 105          *
 106          * @param insertListener
 107          *            The listener to remove
 108          */
 109         public void removeInsertListener(InsertListener insertListener) {
 110                 insertListeners.remove(insertListener);
 111         }
 112
 113         /**
 114          * Notifies all listeners that the project insert has started.
 115          *
 116          * @see InsertListener#projectInsertStarted(Project)
 117          */
 118         protected void fireProjectInsertStarted() {
 119                 for (InsertListener insertListener : insertListeners) {
 120                         insertListener.projectInsertStarted(project);
 121                 }
 122         }
 123
 124         /**
 125          * Notifies all listeners that the insert has generated a URI.
 126          *
 127          * @see InsertListener#projectURIGenerated(Project, String)
 128          * @param uri
 129          *            The generated URI
 130          */
 131         protected void fireProjectURIGenerated(String uri) {
 132                 for (InsertListener insertListener : insertListeners) {
 133                         insertListener.projectURIGenerated(project, uri);
 134                 }
 135         }
 136
 137         /**
 138          * Notifies all listeners that the insert has made some progress.
 139          *
 140          * @see InsertListener#projectUploadFinished(Project)
 141          */
 142         protected void fireProjectUploadFinished() {
 143                 for (InsertListener insertListener : insertListeners) {
 144                         insertListener.projectUploadFinished(project);
 145                 }
 146         }
 147
 148         /**
 149          * Notifies all listeners that the insert has made some progress.
 150          *
 151          * @see InsertListener#projectInsertProgress(Project, int, int, int, int,
 152          *      boolean)
 153          * @param succeeded
 154          *            The number of succeeded blocks
 155          * @param failed
 156          *            The number of failed blocks
 157          * @param fatal
 158          *            The number of fatally failed blocks
 159          * @param total
 160          *            The total number of blocks
 161          * @param finalized
 162          *            <code>true</code> if the total number of blocks has already
 163          *            been finalized, <code>false</code> otherwise
 164          */
 165         protected void fireProjectInsertProgress(int succeeded, int failed, int fatal, int total, boolean finalized) {
 166                 for (InsertListener insertListener : insertListeners) {
 167                         insertListener.projectInsertProgress(project, succeeded, failed, fatal, total, finalized);
 168                 }
 169         }
 170
 171         /**
 172          * Notifies all listeners the project insert has finished.
 173          *
 174          * @see InsertListener#projectInsertFinished(Project, boolean, Throwable)
 175          * @param success
 176          *            <code>true</code> if the project was inserted successfully,
 177          *            <code>false</code> if it failed
 178          * @param cause
 179          *            The cause of the failure, if any
 180          */
 181         protected void fireProjectInsertFinished(boolean success, Throwable cause) {
 182                 for (InsertListener insertListener : insertListeners) {
 183                         insertListener.projectInsertFinished(project, success, cause);
 184                 }
 185         }
 186
 187         /**
 188          * Sets the project to insert.
 189          *
 190          * @param project
 191          *            The project to insert
 192          */
 193         public void setProject(Project project) {
 194                 this.project = project;
 195         }
 196
 197         /**
 198          * Sets the freenet interface to use.
 199          *
 200          * @param freenetInterface
 201          *            The freenet interface to use
 202          */
 203         public void setFreenetInterface(Freenet7Interface freenetInterface) {
 204                 this.freenetInterface = freenetInterface;
 205         }
 206
 207         /**
 208          * Sets the temp directory to use.
 209          *
 210          * @param tempDirectory
 211          *            The temp directory to use, or {@code null} to use the system
 212          *            default
 213          */
 214         public void setTempDirectory(String tempDirectory) {
 215                 this.tempDirectory = tempDirectory;
 216         }
 217
 218         /**
 219          * Starts the insert.
 220          *
 221          * @param progressListener
 222          *            Listener to notify on progress events
 223          */
 224         public void start(ProgressListener progressListener) {
 225                 cancelled = false;
 226                 this.progressListener = progressListener;
 227                 fileScanner = new FileScanner(project);
 228                 fileScanner.addFileScannerListener(this);
 229                 new Thread(fileScanner).start();
 230         }
 231
 232         /**
 233          * Stops the current insert.
 234          */
 235         public void stop() {
 236                 cancelled = true;
 237                 synchronized (lockObject) {
 238                         if (connection != null) {
 239                                 connection.disconnect();
 240                         }
 241                 }
 242         }
 243
 244         /**
 245          * Creates an input stream that delivers the given file, replacing edition
 246          * tokens in the file’s content, if necessary.
 247          *
 248          * @param filename
 249          *            The name of the file
 250          * @param fileOption
 251          *            The file options
 252          * @param edition
 253          *            The current edition
 254          * @param length
 255          *            An array containing a single long which is used to
 256          *            <em>return</em> the final length of the file, after all
 257          *            replacements
 258          * @return The input stream for the file
 259          * @throws IOException
 260          *             if an I/O error occurs
 261          */
 262         private InputStream createFileInputStream(String filename, FileOption fileOption, int edition, long[] length) throws IOException {
 263                 File file = new File(project.getLocalPath(), filename);
 264                 length[0] = file.length();
 265                 return new FileInputStream(file);
 266         }
 267
 268         /**
 269          * Creates a file entry suitable for handing in to
 270          * {@link ClientPutComplexDir#addFileEntry(FileEntry)}.
 271          *
 272          * @param file
 273          *            The name and hash of the file to insert
 274          * @param edition
 275          *            The current edition
 276          * @return A file entry for the given file
 277          */
 278         private FileEntry createFileEntry(ScannedFile file, int edition) {
 279                 FileEntry fileEntry = null;
 280                 String filename = file.getFilename();
 281                 FileOption fileOption = project.getFileOption(filename);
 282                 if (fileOption.isInsert()) {
 283                         fileOption.setCurrentHash(file.getHash());
 284                         /* check if file was modified. */
 285                         if (file.getHash().equals(fileOption.getLastInsertHash())) {
 286                                 /* only insert a redirect. */
 287                                 logger.log(Level.FINE, String.format("Inserting redirect to edition %d for %s.", fileOption.getLastInsertEdition(), filename));
 288                                 return new RedirectFileEntry(filename, fileOption.getMimeType(), "SSK@" + project.getRequestURI() + "/" + project.getPath() + "-" + fileOption.getLastInsertEdition() + "/" + filename);
 289                         }
 290                         try {
 291                                 long[] fileLength = new long[1];
 292                                 InputStream fileEntryInputStream = createFileInputStream(filename, fileOption, edition, fileLength);
 293                                 fileEntry = new DirectFileEntry(filename, fileOption.getMimeType(), fileEntryInputStream, fileLength[0]);
 294                         } catch (IOException ioe1) {
 295                                 /* ignore, null is returned. */
 296                         }
 297                 } else {
 298                         if (fileOption.isInsertRedirect()) {
 299                                 fileEntry = new RedirectFileEntry(filename, fileOption.getMimeType(), fileOption.getCustomKey());
 300                         }
 301                 }
 302                 return fileEntry;
 303         }
 304
 305         /**
 306          * Validates the given project. The project will be checked for any invalid
 307          * conditions, such as invalid insert or request keys, missing path names,
 308          * missing default file, and so on.
 309          *
 310          * @param project
 311          *            The project to check
 312          * @return The encountered warnings and errors
 313          */
 314         public static CheckReport validateProject(Project project) {
 315                 CheckReport checkReport = new CheckReport();
 316                 if ((project.getLocalPath() == null) || (project.getLocalPath().trim().length() == 0)) {
 317                         checkReport.addIssue("error.no-local-path", true);
 318                 }
 319                 if ((project.getPath() == null) || (project.getPath().trim().length() == 0)) {
 320                         checkReport.addIssue("error.no-path", true);
 321                 }
 322                 if ((project.getIndexFile() == null) || (project.getIndexFile().length() == 0)) {
 323                         checkReport.addIssue("warning.empty-index", false);
 324                 } else {
 325                         File indexFile = new File(project.getLocalPath(), project.getIndexFile());
 326                         if (!indexFile.exists()) {
 327                                 checkReport.addIssue("error.index-missing", true);
 328                         }
 329                 }
 330                 String indexFile = project.getIndexFile();
 331                 boolean hasIndexFile = (indexFile != null) && (indexFile.length() > 0);
 332                 List<String> allowedIndexContentTypes = Arrays.asList("text/html", "application/xhtml+xml");
 333                 if (hasIndexFile && !allowedIndexContentTypes.contains(project.getFileOption(indexFile).getMimeType())) {
 334                         checkReport.addIssue("warning.index-not-html", false);
 335                 }
 336                 Map<String, FileOption> fileOptions = project.getFileOptions();
 337                 Set<Entry<String, FileOption>> fileOptionEntries = fileOptions.entrySet();
 338                 boolean insert = fileOptionEntries.isEmpty();
 339                 for (Entry<String, FileOption> fileOptionEntry : fileOptionEntries) {
 340                         String fileName = fileOptionEntry.getKey();
 341                         FileOption fileOption = fileOptionEntry.getValue();
 342                         insert |= fileOption.isInsert() || fileOption.isInsertRedirect();
 343                         if (fileName.equals(project.getIndexFile()) && !fileOption.isInsert() && !fileOption.isInsertRedirect()) {
 344                                 checkReport.addIssue("error.index-not-inserted", true);
 345                         }
 346                         if (!fileOption.isInsert() && fileOption.isInsertRedirect() && ((fileOption.getCustomKey().length() == 0) || "CHK@".equals(fileOption.getCustomKey()))) {
 347                                 checkReport.addIssue("error.no-custom-key", true, fileName);
 348                         }
 349                 }
 350                 if (!insert) {
 351                         checkReport.addIssue("error.no-files-to-insert", true);
 352                 }
 353                 Set<String> fileNames = new HashSet<String>();
 354                 for (Entry<String, FileOption> fileOptionEntry : fileOptionEntries) {
 355                         FileOption fileOption = fileOptionEntry.getValue();
 356                         if (!fileOption.isInsert() && !fileOption.isInsertRedirect()) {
 357                                 logger.log(Level.FINEST, "Ignoring {0}.", fileOptionEntry.getKey());
 358                                 continue;
 359                         }
 360                         String fileName = fileOptionEntry.getKey();
 361                         if (fileOption.hasChangedName()) {
 362                                 fileName = fileOption.getChangedName();
 363                         }
 364                         logger.log(Level.FINEST, "Adding “{0}” for {1}.", new Object[] { fileName, fileOptionEntry.getKey() });
 365                         if (!fileNames.add(fileName)) {
 366                                 checkReport.addIssue("error.duplicate-file", true, fileName);
 367                         }
 368                 }
 369                 return checkReport;
 370         }
 371
 372         /**
 373          * {@inheritDoc}
 374          */
 375         public void run() {
 376                 fireProjectInsertStarted();
 377                 List<ScannedFile> files = fileScanner.getFiles();
 378
 379                 /* create connection to node */
 380                 synchronized (lockObject) {
 381                         connection = freenetInterface.getConnection("project-insert-" + random + counter++);
 382                 }
 383                 connection.setTempDirectory(tempDirectory);
 384                 boolean connected = false;
 385                 Throwable cause = null;
 386                 try {
 387                         connected = connection.connect();
 388                 } catch (IOException e1) {
 389                         cause = e1;
 390                 }
 391
 392                 if (!connected || cancelled) {
 393                         fireProjectInsertFinished(false, cancelled ? new AbortedException() : cause);
 394                         return;
 395                 }
 396
 397                 Client client = new Client(connection);
 398
 399                 /* collect files */
 400                 int edition = project.getEdition();
 401                 String dirURI = "USK@" + project.getInsertURI() + "/" + project.getPath() + "/" + edition + "/";
 402                 ClientPutComplexDir putDir = new ClientPutComplexDir("dir-" + counter++, dirURI, tempDirectory);
 403                 if ((project.getIndexFile() != null) && (project.getIndexFile().length() > 0)) {
 404                         putDir.setDefaultName(project.getIndexFile());
 405                 }
 406                 putDir.setVerbosity(Verbosity.ALL);
 407                 putDir.setMaxRetries(-1);
 408                 putDir.setEarlyEncode(false);
 409                 putDir.setManifestPutter(ManifestPutter.DEFAULT);
 410                 for (ScannedFile file : files) {
 411                         FileEntry fileEntry = createFileEntry(file, edition);
 412                         if (fileEntry != null) {
 413                                 try {
 414                                         putDir.addFileEntry(fileEntry);
 415                                 } catch (IOException ioe1) {
 416                                         fireProjectInsertFinished(false, ioe1);
 417                                         return;
 418                                 }
 419                         }
 420                 }
 421
 422                 /* start request */
 423                 try {
 424                         client.execute(putDir, progressListener);
 425                         fireProjectUploadFinished();
 426                 } catch (IOException ioe1) {
 427                         fireProjectInsertFinished(false, ioe1);
 428                         return;
 429                 }
 430
 431                 /* parse progress and success messages */
 432                 String finalURI = null;
 433                 boolean success = false;
 434                 boolean finished = false;
 435                 boolean disconnected = false;
 436                 while (!finished && !cancelled) {
 437                         Message message = client.readMessage();
 438                         finished = (message == null) || (disconnected = client.isDisconnected());
 439                         logger.log(Level.FINE, "Received message: " + message);
 440                         if (!finished) {
 441                                 @SuppressWarnings("null")
 442                                 String messageName = message.getName();
 443                                 if ("URIGenerated".equals(messageName)) {
 444                                         finalURI = message.get("URI");
 445                                         fireProjectURIGenerated(finalURI);
 446                                 }
 447                                 if ("SimpleProgress".equals(messageName)) {
 448                                         int total = Integer.parseInt(message.get("Total"));
 449                                         int succeeded = Integer.parseInt(message.get("Succeeded"));
 450                                         int fatal = Integer.parseInt(message.get("FatallyFailed"));
 451                                         int failed = Integer.parseInt(message.get("Failed"));
 452                                         boolean finalized = Boolean.parseBoolean(message.get("FinalizedTotal"));
 453                                         fireProjectInsertProgress(succeeded, failed, fatal, total, finalized);
 454                                 }
 455                                 success |= "PutSuccessful".equals(messageName);
 456                                 finished = (success && (finalURI != null)) || "PutFailed".equals(messageName) || messageName.endsWith("Error");
 457                         }
 458                 }
 459
 460                 /* post-insert work */
 461                 if (success) {
 462                         @SuppressWarnings("null")
 463                         String editionPart = finalURI.substring(finalURI.lastIndexOf('/') + 1);
 464                         int newEdition = Integer.parseInt(editionPart);
 465                         project.setEdition(newEdition);
 466                         project.setLastInsertionTime(System.currentTimeMillis());
 467                         project.copyHashes();
 468                 }
 469                 fireProjectInsertFinished(success, cancelled ? new AbortedException() : (disconnected ? new IOException("Connection terminated") : null));
 470         }
 471
 472         //
 473         // INTERFACE FileScannerListener
 474         //
 475
 476         /**
 477          * {@inheritDoc}
 478          */
 479         public void fileScannerFinished(FileScanner fileScanner) {
 480                 if (!fileScanner.isError()) {
 481                         new Thread(this).start();
 482                 } else {
 483                         fireProjectInsertFinished(false, null);
 484                 }
 485                 fileScanner.removeFileScannerListener(this);
 486         }
 487
 488         /**
 489          * Container class that collects all warnings and errors that occured during
 490          * {@link ProjectInserter#validateProject(Project) project validation}.
 491          *
 492          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 493          */
 494         public static class CheckReport implements Iterable<Issue> {
 495
 496                 /** The issures that occured. */
 497                 private final List<Issue> issues = new ArrayList<Issue>();
 498
 499                 /**
 500                  * Adds an issue.
 501                  *
 502                  * @param issue
 503                  *            The issue to add
 504                  */
 505                 public void addIssue(Issue issue) {
 506                         issues.add(issue);
 507                 }
 508
 509                 /**
 510                  * Creates an {@link Issue} from the given error key and fatality flag
 511                  * and {@link #addIssue(Issue) adds} it.
 512                  *
 513                  * @param errorKey
 514                  *            The error key
 515                  * @param fatal
 516                  *            {@code true} if the error is fatal, {@code false} if only
 517                  *            a warning should be generated
 518                  * @param parameters
 519                  *            Any additional parameters
 520                  */
 521                 public void addIssue(String errorKey, boolean fatal, String... parameters) {
 522                         addIssue(new Issue(errorKey, fatal, parameters));
 523                 }
 524
 525                 /**
 526                  * {@inheritDoc}
 527                  */
 528                 public Iterator<Issue> iterator() {
 529                         return issues.iterator();
 530                 }
 531
 532                 /**
 533                  * Returns whether this check report does not contain any errors.
 534                  *
 535                  * @return {@code true} if this check report does not contain any
 536                  *         errors, {@code false} if this check report does contain
 537                  *         errors
 538                  */
 539                 public boolean isEmpty() {
 540                         return issues.isEmpty();
 541                 }
 542
 543                 /**
 544                  * Returns the number of issues in this check report.
 545                  *
 546                  * @return The number of issues
 547                  */
 548                 public int size() {
 549                         return issues.size();
 550                 }
 551
 552         }
 553
 554         /**
 555          * Container class for a single issue. An issue contains an error key
 556          * that describes the error, and a fatality flag that determines whether
 557          * the insert has to be aborted (if the flag is {@code true}) or if it
 558          * can still be performed and only a warning should be generated (if the
 559          * flag is {@code false}).
 560          *
 561          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’
 562          *         Roden</a>
 563          */
 564         public static class Issue {
 565
 566                 /** The error key. */
 567                 private final String errorKey;
 568
 569                 /** The fatality flag. */
 570                 private final boolean fatal;
 571
 572                 /** Additional parameters. */
 573                 private String[] parameters;
 574
 575                 /**
 576                  * Creates a new issue.
 577                  *
 578                  * @param errorKey
 579                  *            The error key
 580                  * @param fatal
 581                  *            The fatality flag
 582                  * @param parameters
 583                  *            Any additional parameters
 584                  */
 585                 protected Issue(String errorKey, boolean fatal, String... parameters) {
 586                         this.errorKey = errorKey;
 587                         this.fatal = fatal;
 588                         this.parameters = parameters;
 589                 }
 590
 591                 /**
 592                  * Returns the key of the encountered error.
 593                  *
 594                  * @return The error key
 595                  */
 596                 public String getErrorKey() {
 597                         return errorKey;
 598                 }
 599
 600                 /**
 601                  * Returns whether the issue is fatal and the insert has to be
 602                  * aborted. Otherwise only a warning should be shown.
 603                  *
 604                  * @return {@code true} if the insert needs to be aborted, {@code
 605                  *         false} otherwise
 606                  */
 607                 public boolean isFatal() {
 608                         return fatal;
 609                 }
 610
 611                 /**
 612                  * Returns any additional parameters.
 613                  *
 614                  * @return The additional parameters
 615                  */
 616                 public String[] getParameters() {
 617                         return parameters;
 618                 }
 619
 620         }
 621
 622 }